Odorless gas-heater



0. D. ORVIS. ODORLESS GAS HATER. APPLICATION HLED JUNE 5. |916.

#MMI Inkt:

" l; l 11u11 ODORLESS GrAS-I-IEATER.I

Specification of Letters Patent.

Patented Aug. 29, 19116.

Application filed June 5, 1916. Serial No. 101,675.

tible gas is utilized as a Ameans for heatingl air.

The objects of the invention are, first, to utilize the gas economically for heating the air; second, to establish a circulation of air by drawing cold air from the floor of the room, heating it, and discharging the heated air under such velocity as to cause it to flow l outwardly into the room to points remote to the heating appliance; third,\to deodorize the gaseous products of combustion, thus establishing hygienic conditions of use, and, finally, to afford means whereby the room may be in a measure illuminated without resorting to the use of lighting appliances separate from the gas heater'.

In a preferred embodiment of the invention the gas heater comprises a casing of suitable form and dimensions, the interior of which casing is provided with a hori zontal partition adjacent the bottom and a vertical partition adjacent one side wall, whereby a subjacent chamber is produced above the base of the heater and an ascending flue is formed at one side of the combustion chamber, which subjacent chamber and the ascending flue are independent of each other. Within the combustion chamber is positioned a plurality of burners, to which gas is supplied by appropriate means. Various air inlets are provided as follows The base is provided with a central air inlet so that cold air from the Hoor of the room is admitted directly to the subjacent chamber; in the horizontal partition are a plurality of air inlets positioned adjacent the burners for permitting the flow of air from the subjacent chamber to and around the burners, thus establishing an infiow of air in paths relatively to theburners for admiXture with the gaseous products of combustion; in thewall of the casing near the bottom thereof is an air inlet for admitting air directly to the ascending flue in order to establish an upward circulation of air which passes from the flue and becomes mixed with the ascending products of combustion and air in such a manner as to dilute the gaseous products and deodorize the same, and in the opposite wall of the casing is an outlet through which the gaseous products and air are free to flow under such velocity as results in the projection of the heat into the room and to points distant from the heater.

At the top'of the casing is positioned a cover composed of transparent or translucent material, preferably a heavy pane of glass, through which the rays of light emanating from the burners are free to pass for the purpose of illuminating the room.

It is to be noted that the current of air flowing through the ascending flue is free to sweep crosswise within the combustion chamber and toward the eXit so that there is established below the glass top a current of relatively cool air which eommingles with the gaseous products within the combustion chamber and which flows through the out let, thus precluding the heated air or gaseous products from having direct contact with the glass top and overcoming, or at least minimizing, any tendency of the heated gases from cracking or breaking said glass top.

Other features and advantages of the invention will appear from the following detailed description taken in connection with the accompanying drawings, wherein- ,Figure l is a vertical section taken longitudinally through a gas'heater embodying this invention. Fig. 2 is an end elevation looking from the right in Fig. 1, and with the upper part of the heater broken away. Fig. 3 is a vertical cross section, the arrows showing the circulation of the gaseous products and the air within the heater.

A designates a. casing of suitable form and dimensions, the same being composed of sheet metal or cast metal, as desired. The top of the metal casing is open, the same being closed by a cover of transparent material B. In a preferred form of the invention the cover consists of a slab or pane of glass held in position upon the casing by a marginal frame Z) having overlapping relation to the glass slab B and attached in a suitable way to the casing. The casing is supported in a position raised above the Hoor of a room or pavement by a base C composed, preferably, of a single casting, said base having depending feet or legs c and an upstanding flange c', whereby the lower edge of the casing A is in lapping relation to the flange c', so that the two parts A, C are adapted for connection rigidly one to the other.

Positioned within the lower part of the casing A is a horizontal partition D, the same being secured in a suitable way to the upstanding flange o of the base. As shown, the partition D and the base C are parallel to each other for producing' 'a subjacent chamber D. The base C is provided, preferably centrally thereof, with an air inlet d, so that the air is free to flow from the floor of the room into the chamber D. The partition D is provided with airinlets d', the latter being positioned at the respective Sides of the inlet ai in the base, so that the air from the chamber D will flow through the inlets al of the partition D into the combustion chamber E within the casing.

F, G are burners arranged horizontally within the combustion chamber to extend longitudinally thereof. Said burners are shown as pipes provided with flame orifices f, but it is apparent that any suitable form of burner may be employed in lieu of the perforated pipes. Said burners F, G are positioned within the lower part of the combustion chamber E and quite close to the horizontal partition D, the flame orifices f of theburners F, Gr being arranged in inclined positions and above the air inlets d" of the partition D. As shown, the burners F, G extend through the end walls of casing A, and at one end the two burners are connected by a cross pipe g, positioned exteriorly to the casing. Said cross pipe is provided with a valve H having a nipple h whereby a gas tubey or pipe is adapted to be coupled to the cross pipe 1n order to supply gas to the burnersF, G. The burners are provided, also, with cocks f adapted to be opened separately for admitting gas to said burners F, G. In one end wall of the casing f A are openings g adjacent the burners so as to provide means whereby a lighted taper or match can be thrust into the chamber E for the purpose of igniting the gas issuing from the orifices f of said burners F, G.

I designates an outlet for the heated air, said outlet being pro-vided in one of the side walls of the casing A. The outlet is in the form of a slot extending longitudinally of the casing, said slot being positioned at a isuitable point belowV the transparent slab B of the heater.

J designates a vertical partition arranged close to a side wall lof the casing A opposite to the other sidewall which is provided with the outlet slot I. Said vertical partition extends longitudinally of the casing and is parallel to the rear wall thereof, thereby producing an ascending flue J at the rear of the combustion chamber E. The lower edge of the longitudinal partition is fitted to or joined with the horizontal partition D, whereas the upper edge of said partition J terminates at a suitable point below the transparent slab B, it being preferred to so arrange and proportion the partition J .that the upper edge their-zotis substantially in the horizontal plane of the outlet I. Air is admitted to the .ascending flue J by one or more openings j provided in the back wall of the heater near the lower part of the ascending flue. It will be noted byrreference to Fig. 3 that the ascending fiue J is independent of, or disconnected from, thesubjacent chamber B, and thus air admitted through the chamber and the inlets d flows close to the burners F, Gr, so that the air admitted by the chamber D supports the combustion of the gas supplied through the flame orifices 7 in a way for the infiowing air to commingle with the gaseous products of combustion, and at the same time the air is admitted also through the inlets j to the ascending liuc J, the air flowing through the flue commingling with the mixed air and gas within the combustion chamber E, whereby the mixed air and gas is diluted with the fresh air admitted by the fiue J, as a result of which thev mixture of air and gas is modified and deodorized bythe air flowing through the flue J.

It is apparent that the gas cocks f II may be turned on for admitting gas to both burners F, G, and the gas ignited at the liame apertures f. The gaseous products of combustion ascend within the chamber E, inducing an inflow of air through inlet d, chamber D and inlets d', the air thusadmitted being directed by inlets cl to and around the burners so that the air supports combustion and mixes with the gaseous products emanating from the burners. The walls of the heater and the vertical partition J are thus heated, and a current of air is induced to flow through inlet j and flue J the cool air thus admitted by the flue being warmed by contact with the casing and the flue plate J, but this relatively cool air from the flue Hows below the transparent slab B in a direction crosswise of the chamber E, thus establishing below the transparent cover slab B a circulation of air at less temperature than that of the gaseous products mixed with the air flowing upwardly within the chamber E, whereby the transparent slab B is so protected that it will not break or crack in the service of the heater. The air supplied by the flue mixes with the gaseous products of combustion within the chamber E, the effect of which is to dilute said gaseousl products and thus deodorize the same. VThe cool air is drawn from the floor through the inlets d, jand the heated gases and air flow out of the chamber E through the exit slot I under some pressure, thus circulating the air and projecting the warm airinto the room for a distance beyond the heater, as a result of which the room is quickly and thoroughly heated. Either or both of the cocks may be operated to shut off the How of gas to one or both burners, thus controlling the heat Aas found necessary. By locating the gas burners directly above the air inlets d', the inHowing air is heated at once, precluding the cold air from coming into contact with the walls of the heater. The location of the inlets d out of register with the inlet Z obtains a circulation of air within chamber D', thus precluding heat radiation toward the Hoor. It is apparent that light rays from the burners pass freely through the glass slab so as to illuminate the room, but as explained this glass slab is protected from the effects of the heat by the circulation of cool air below the slab, which cool air is admitted by the ascending Hue.

I-Iaving thus fully described the invention, what I claim as new and desire to secure by Letters Patent is l. A gas heater embodying a casing provided with an air inlet at the bottom and a heat eXit near the top, a transparent slab at the top of the casing for permitting the free passage of light rays, a burner within the casing, and a Hue for supplying air to the casing so as to set up a circulation of relatively cool air below the transparent slab.

2. A gas heater embodving a casing provided with an air inlet and a heat exit, a burner avithinthe casing, a transparent cover for said casing, and means for estab` lishing below the transparent cover a circulation of relatively cool air so as to pre clude cracking of said cover by the effects of the heat from said burner. v

'3. A gas heater embodying a casing provided with an air inlet and a heat eXit, a burner within the casing, a transparent glass cover for said casing whereby the light from the burner is available for illuminating purposes, and an ascending Hue the air inlet to which is separate from the similar inlet to said casing, the outlet from the Hue being positioned to discharge a current of relatively cool air below the transparent cover, which air is free to miX with the gaseous products within the casing.

4. A gas heater embodying a casing provided at its bottom with an air inlet, burners positioned within the casing, a heat exit from the casing above the burners, a transparent slab on the casing above the heat exit, and a Hue the air inlet to which is separate from the air inlet to the casing, said Hue having an exit in substantially the plane of the heat exit and operating to direct the inHowing current of cool air in a direction crosswise of the casing and below the transparent cover.

5. A gas heater embodying a casing, a chambered base therefor, said base having a central air inlet, other air inlets to the chamber of the casing positioned out of register with the air inlet to the base, burners within the casing and adjacent to the second air inlets, a heat eXit in the casing, and a Hue the air inlet to which is separate from the aforesaid air inlets and the exit from which is substantially in the same horizontal plane as the heat exit from the casing.

6. A gas heater comprising a casing provided in the front thereof with a heat exit, a 'chambered base for said casing, the bottom of said base having an air inlet and the top of the base being provided with openings out of register with the air inlet, burners positioned within the casing adjacent the openings in the top of the base, and a rear Hue the inlet to which is separate from the aforesaid air inlets and the exit from which directs the inHowing cool air in a path crosswise of the casing so as to commingle with the gaseous products of combustion and to deodorize the same prior to the outflow of the heated gases from the casing.

In testimony whereof Iv have hereunto signed my name.

@REL D. ORVIS.

Gopies of this patent may be obtained for ve cents each, by addressing` the Commissioner of Patents,

Washington, D. C. 

